Respuesta :
Answer:
the probability that this girl pulls out a red pen is 3/5 or 60%
Step-by-step explanation:
there are 3 red pens
and 2 black pens.
that means there are 5 pens
so when she reaches down. she can pick up 3 out of the 5 pens
The probability that both times she selects a red pin will be 9/25
What is probability?
Its basic premise is that something will almost certainly happen. The percentage of favorable events to the total number of occurrences.
Tina has 3 red pens and 2 black pens in the bottom of her book bag.
She randomly selects a pen to use and then puts it back in her bag.
Later she picks another one.
The total number of the events will be
Total event = 3 + 2
Total event = 5
Then the probability that both times she selects a red pen will be
P = (3/5) x (3/5)
P = 9 / 25
Then the probability that both times she selects a red pin will be 9/25.
More about the probability link is given below.
https://brainly.com/question/795909
#SPJ2
